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Stabilization of the Retained Austenite in Steel by Friction Stir Welding
2015The phase transformation in steel during friction stir welding (FSW) was studied using the Fe–24wt%Ni–0.1%C alloy. When the FSW condition was adapted in order that the maximum temperature was sufficiently reached for austenitization, the volume fraction of the retained austenite in the stir zones was significantly increased.
Takuya Miura +2 more
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Revealing the role of dislocations on the stability of retained austenite in a tempered bainite
Scripta Materialia, 2019Abstract The present study, for the first time, provides direct experimental evidence revealing the effect of dislocations of the bainite matrix on the mechanical stability of retained austenite (RA) in a low carbon bainitic steel, while keeping all other influencing factors unchanged.
S.H. He +5 more
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Improved resistance to hydrogen embrittlement by tailoring the stability of retained austenite
Materials Science and Technology, 2017The susceptibility of hydrogen embrittlement (HE) in GCr15 bearing steel under two types of heat treatments: quenching and tempering (QT) and pre-quenching and austempering (PQA) were investigated. Results showed that PQA-treated specimen have higher mechanical stability of the retained austenite (RA) compared with QT-treated specimen.
Ke Wu +4 more
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Evolution and thermal stability of retained austenite in SAE 52100 bainitic steel
Materials Science and Engineering: A, 2007Abstract In this work, the evolution of retained austenite during isothermal bainitic heat treatment in SAE 52100 steel, 1.01C–1.36Cr–0.32Mn–0.25Si (wt.%), is investigated with optical microscopy, X-ray diffraction and thermo-magnetic measurements. A significant amount of austenite is retained in the material. The dependence of the volume fraction of
Natalia Luzginova +2 more
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Stability of Retained Austenite in a Nb Microalloyed Mn-Si TRIP Steel
Materials Science Forum, 1998The effect of thermomechanical processing on the volume fraction and stability of retained austenite in a Nb microalloyed Mn-Si TRIP steel was investigated. In one set of tests, specimens were isothermally held at 400 °C for a series of different times, then air cooled to room temperature.
D.Q. Bai, A. Di Chiro, Steve Yue
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Metallurgical and Materials Transactions A, 2004
Two Fe-0.2C-1.55Mn-1.5Si (in wt pct) steels, with and without the addition of 0.039Nb (in wt pct), were studied using laboratory rolling-mill simulations of controlled thermomechanical processing. The microstructures of all samples were characterized by optical metallography, X-ray diffraction (XRD), and transmission electron microscopy (TEM).
Timokhina, I B +2 more
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Two Fe-0.2C-1.55Mn-1.5Si (in wt pct) steels, with and without the addition of 0.039Nb (in wt pct), were studied using laboratory rolling-mill simulations of controlled thermomechanical processing. The microstructures of all samples were characterized by optical metallography, X-ray diffraction (XRD), and transmission electron microscopy (TEM).
Timokhina, I B +2 more
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Retained austenite stability investigation in TRIP steel using neutron diffraction
Materials Science and Engineering: A, 2006In situ neutron diffraction experiment was employed for monitoring of conditioned austenite transformation to ferrite, and also for the retained austenite stability evaluation during subsequent mechanical loading. The progress in the austenite decomposition to ferrite is monitored at different transformation temperatures.
J. Zrník +5 more
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Effect of Tempering on the Stability of Retained Austenite in Carbide-Free Bainitic Steel
SSRN Electronic Journal, 2022Kun Wang +3 more
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Effect of aluminum on stability of retained austenite in bainitic malleable cast iron
Metal Science and Heat Treatment, 2011The effect of aluminum additives on the microstructure of bainitic malleable cast iron after heat treatment consisting of isothermal hardening at 350°C in a bath with molten lead after a hold at 920°C for 90 min is studied. A metallographic study is performed by the methods of light and scanning electron microscopy and x-ray diffraction analysis of the
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Stability of retained austenite on ageing
Acta Metallurgica, 1960E.G. Ramachandran, C. Dasarathy
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